Abstract
In a study of toxic polyhydroxylated andromedane diterpenoids, several novel derivatives of grayanotoxin III are described. Their spectral and physical characteristics are compared to ericaceous natural products. Separations on aluminium oxide and silica gel indicated that the absorption affinity of hydroxy groups on the perhydroazulene carbon skeleton was in teh order of 14γ-OH > 3β-OH > 6β-OH > 2α-OH. Partition chromatography using ethylene glycol as stationary phase exhibited migration largely in accordance with Reversed Traube's rule. This chromtographic-spectroscopic combination procedure is suitable for the micro-screening of these toxins.
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